arrow_back
search
close

RANSOM_TENSEC.A

December 01, 2016
 ALIASES:

W32/Diztakun.ASCE!tr (Fortinet)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

26,624 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

23 Oct 2016

Payload:

Displays message/message boxes, Encrypts files

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This Trojan renames encrypted files using the following names:

  • {original filename}.encrypted

It does the following:

  • Avoids encrypting the following files:
    • windows.exe

  • Encrypts files in the following directories:
    • Desktop
    • Pictures
    • Music
    • Start Menu
    • Documents
    • Application Data
    • Program Files
    • Program Files (x86)
    • Admin Tools
    • User Profile
    • Personal
    • Programs

NOTES:

This ransomware locks the screen and shows the following:

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.860.05

FIRST VSAPI PATTERN DATE:

26 Oct 2016

VSAPI OPR PATTERN File:

12.861.00

VSAPI OPR PATTERN Date:

27 Oct 2016

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Scan your computer with your Trend Micro product to delete files detected as RANSOM_TENSEC.A. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 5

Restore encrypted files from backup.


Did this description help? Tell us how we did.